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Autor: K. Lenhard Rudolph
ISBN-13: 9783540737094
Einband: eBook
Seiten: 330
Sprache: Englisch
eBook Typ: PDF
eBook Format: eBook
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Telomeres and Telomerase in Aging, Disease, and Cancer

Molecular Mechanisms of Adult Stem Cell Ageing
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Twenty-five years after the disclosure of the telomeric DNA sequence and 22 years after the discovery of telomerase, it has become clear that telomeres and telomerase influence disease of human ageing including cancer. This book summarizes our current knowledge on the role of telomeres and telomerase in ageing, regeneration, and cancer with a special focus on ageing stem cells. Moreover, the book reviews current ef forts to target telomeres and telomerase for anticancer treatment or reg- erative therapies. 1. 1 Ageing The molecular analysis of ageing is an emerging research field that will have great impact on patients care, lifestyle, and on disease prevention in the human population worldwide. Major molecular mechanisms that influence the ageing process include (1) the accumulation of molecular damage affecting DNA and p- teins, (2) alterations in gene expression, including alterations in checkpoint responses, metabolic pathways, and developmental pathways, and (3) the decline in adult stem cell function. All these mechanisms lead to a decrease in organ main- nance and function, thus representing a major factor limiting the quality of life d- ing ageing. Moreover, the accumulation of molecular damage increases genetic alterations and the cancer risk during ageing. Indeed, increased age is the leading cause of cancer. Understanding the molecular basis of ageing will ultimately point to targets for novel therapies aiming to improve the function of cells and organs in the ageing organism, thus allowing increased vitality or what we think of as “healthy ageing.
Telomere shortening represents one of the basic aspects of ageing and telomere dysfunction could contribute to the accumulation of DNA damage during ageing. This book summarizes evidence and data indicating that telomere dysfunction influences human ageing, diseases and cancer. The book describes our current knowledge on checkpoints that limit cellular lifespan and survival in response to telomere dysfunction. There is special focus on adult stem cells.
Telomere Shortening and Ageing.- Cellular versus Organismal Aging.- Telomere-Induced Senescence of Primary Cells.- Telomeres, Senescence, Oxidative Stress, and Heterogeneity.- Initiation of Genomic Instability, Cellular Senescence, and Organismal Aging by Dysfunctional Telomeres.- Telomerase Mutations and Premature Ageing in Humans.- Telomerase, Telomeres, and Stem Cell Aging.- Mechanisms of Stem Cell Ageing.- Senescence Signatures of Human Hematopoietic Stem Cells.- Telomere Shortening Induces Cell Intrinsic Checkpoints and Environmental Alterations Limiting Adult Stem Cell Function.- p16INK4a and Stem Cell Ageing: A Telomere-Independent Process?.- Telomerase as a Potential Regulator of Tissue Progenitor Cells.- Telomeres, DNA Damage and Cancer.- Telomere Shortening and Telomerase Activation during Cancer Formation.- Telomere Binding Proteins and Disease.- Therapeutic Targets.- Targeting Telomerase: Therapeutic Options for Cancer Treatment.- Werner Syndrome, Telomeres, and Stress Signaling: Implications for Future Therapies?.

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Autor: K. Lenhard Rudolph
ISBN-13 :: 9783540737094
ISBN: 354073709X
Erscheinungsjahr: 08.11.2007
Verlag: Springer Berlin
Seiten: 330
Sprache: Englisch
Auflage 2008
Sonstiges: Ebook